Drug Profile

{
  "adverse_events": {
    "death_fraction": 0.13,
    "total_reports": 133626
  },
  "identity": {
    "label_openfda": {
      "generic_name": [
        "WARFARIN SODIUM"
      ]
    }
  },
  "label_sections": {
    "boxed_warning": {
      "source_tag": "boxed_warning",
      "truncated": true
    }
  },
  "query": {
    "drug": "warfarin",
    "ndc": null
  },
  "severity": {
    "band": "high",
    "flags": {
      "has_boxed_warning": true
    },
    "score": 62
  },
  "sources": {
    "partial": false
  }
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.agentstools.dev/drug/profile?drug=warfarin'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://api.agentstools.dev/drug/profile?drug=warfarin' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.04 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.04" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.04 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.agentstools.dev%2Fdrug%2Fprofile
const res = await pay("https://api.agentstools.dev/drug/profile?drug=warfarin");
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.04 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.04"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.agentstools.dev/drug/profile?drug=warfarin")
    print(res.status_code, res.text)